Re: [patch 00/12] hrtimers: Prevent hrtimer interrupt starvation

Thomas Gleixner
2026-04-07T20:58:20Z

On Tue, Apr 07 2026 at 11:35, Calvin Owens wrote:
> On Tuesday 04/07 at 20:03 +0200, Thomas Gleixner wrote:
>> On Tue, Apr 07 2026 at 10:38, Calvin Owens wrote:
>> > On Tuesday 04/07 at 10:54 +0200, Thomas Gleixner wrote:
>> >> He provided a reproducer, which sets up a timerfd based timer and then
>> >> rearms it in a loop with an absolute expiry time of 1ns.
>> >
>> > The original AMD machines survive the reproducer with this series.
>> >
>> > Tested-by: Calvin Owens <calvin@wbinvd.org>
>> >
>> > I'm happy to test subsets of it and stable backports too, if that's
>> > helpful, just let me know.
>>
>> We'll only backport the first patch, so confirming that it still
>> prevents the issue would be nice. The rest is slated for upstream only.
>
> Confirmed, [1/12] alone passes.

Thanks a lot for all your help. Very appreciated.

tglx